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Updated: Jun 16, 2026

Fabrication of Low Temperature Carbon Nanotube Vertical Interconnects Compatible with Semiconductor Technology

Fabrication of Low Temperature Carbon Nanotube Vertical Interconnects Compatible with Semiconductor Technology

Published on: December 7, 2015

Vertically aligned laser sliced MWCNTs.

Thaar M D Alharbi¹, Kasturi Vimalanathan², Ibrahim K Alsulami²

¹Flinders Institute for Nanoscale Science and Technology, College of Science and Engineering, Flinders University, Adelaide, SA 5001, Australia. colin.raston@flinders.edu.au and Physics Department, Faculty of Science, Taibah University, Almadinah Almunawarrah 42353, Saudi Arabia.

|November 2, 2019

Summary

This summary is machine-generated.

Researchers developed a novel method to precisely control the length of multi-walled carbon nanotubes (MWCNTs) using a laser and vortex fluidic device. This technique also enables controlled vertical self-assembly of short MWCNTs for advanced material applications.

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Fabrication, Densification, and Replica Molding of 3D Carbon Nanotube Microstructures

Fabrication, Densification, and Replica Molding of 3D Carbon Nanotube Microstructures

Published on: July 2, 2012

Area of Science:

Materials Science
Nanotechnology
Chemical Engineering

Background:

Precise control over multi-walled carbon nanotube (MWCNT) dimensions is crucial for advanced applications.
Existing methods for length control often lack precision or introduce impurities.
Vertically aligned structures require specific nanotube lengths and pristine outer walls.

Purpose of the Study:

To develop a continuous flow, 'top-down' method for precisely controlling the length of sliced MWCNTs.
To achieve length control without the use of chemicals or auxiliary substances.
To demonstrate the ability to vertically self-assemble tailored MWCNTs.

Main Methods:

Utilized a vortex fluidic device (VFD) coupled with a 1064 nm pulse laser for continuous slicing of MWCNTs.
Varied VFD operating parameters and laser energy to achieve different length distributions.
Employed a simple dipping and rinsing method for vertical self-assembly onto a silicon substrate.

Main Results:

Successfully generated MWCNTs with controlled length distributions centered at 75 ± 2.1 nm, 300 ± 1.8 nm, and 550 ± 1.4 nm.
Observed a reduction in side wall defects on the MWCNTs after processing.
Demonstrated controlled surface density coverage during vertical self-assembly of short MWCNTs.

Conclusions:

The VFD-laser system offers an effective, chemical-free method for precise MWCNT length control.
The developed process yields high-quality, shorter MWCNTs suitable for specific applications.
Controlled vertical self-assembly of tailored MWCNTs is achievable with a simple post-processing technique.